Low-if multiple mode transmitter front end and corresponding method

US7756219B2 · kind B2 · utility

Assignee

• GlobalFoundries Inc. · KY

Inventors

• Sascha Beyer · Medingen, DE
• Wolfram Kluge · Dresden, DE
• Michael Schmidt · Dresden, DE

Key dates

• Filing date: Jul 14, 2005
• Grant date: Jul 13, 2010
• Expiry date: May 12, 2029

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W84/12
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A WLAN transmitter capable of transmitting data signals modulated in accordance with an individual one of at least two different modulation schemes and corresponding methods and integrated circuit chips are provided. The WLAN transmitter contains a front end section having a low-IF topology and including a digital front end unit and an analog front end unit. The digital front end unit contains a first signal processing branch for processing transmission data signals modulated in accordance with a first one of said at least two different modulation schemes. The digital front end unit further contains a second signal processing branch for processing transmission data signals modulated in accordance with a second one of said at least two different modulation schemes. The analog front end unit contains one single signal processing branch for processing transmission data signals modulated in accordance with any one of said at least two different modulation schemes.